Hi,
quiete regular i have the problem that i'd like to render stuff with
mapnik and an XML file. Now i need to change the datasource e.g. for
switching to historic tables or something. 

Currently i am modifying the XML itself with regex like this:

for line in i:
        line=line.replace("%PREFIX%", "germany_" + date)


where the Datasource is something like this:

        (select way,admin_level from %PREFIX%_roads where 
"boundary"='administrative') as admin</Parameter>

Is there a way to change this from python - e.g. read the XML
file and modify the datasource afterwards?

An alternative would be to add a layer and reference Styles in
the XML afterwards, which would probably break the layering.

Flo
-- 
Florian Lohoff                                                 [email protected]
"Es ist ein grobes Missverständnis und eine Fehlwahrnehmung, dem Staat
im Internet Zensur- und Überwachungsabsichten zu unterstellen."
- - Bundesminister Dr. Wolfgang Schäuble -- 10. Juli in Berlin 

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